<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../../react18/react.development.js"></script>
    <script src="../../react18/react-dom.development.js"></script>
    <script src="../../react18/babel.min.js"></script>
    <script src="../../react18/prop-types.js"></script>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
         class GetIptValue extends React.Component{
            iptEle = React.createRef();
            render(){
               return (<div>
                    <input type="text"ref={this.iptEle} onChange={this.iptChangeHandle} placeholder="表单修改后弹出"/>
                    </div>)
            }
            //react里的事件对象是它自己的合成对象，onchange与oninput事件是一个效果
            iptChangeHandle=(e)=>{
                console.log(e.target.value);
            }
            
        }
        const root=ReactDOM.createRoot(document.getElementById('app'))
        root.render(<GetIptValue/>)
    </script>
</body>
</html>